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Average Grade Calculator

Type or paste a list of grades and get the average instantly, along with the letter grade and your highest and lowest scores. Percentages, letters and points all work.

  • Live results
  • U.S. grading scale
  • Private

Separate with commas, spaces or new lines. Mix percentages, letters (B+) and points (45/50). You can paste a column from a spreadsheet.

Average grade

Type or paste a few grades.

How to calculate an average grade

Average = (grade₁ + grade₂ + … + gradeₙ) ÷ n

Every grade counts equally in a simple average. The calculator converts letters and fractions to percentages first, so you can mix formats: B+ counts as 88%, 18/20 as 90%.

Worked example

Averaging five quiz scores

Quizzes: 96, 88, 74, 91, 18/20 (90%). Sum = 439. Average = 439 ÷ 5 = 87.8%, a B+.

When a simple average is the right tool

  • Averaging scores within one category, like all your quizzes, before weighting.
  • Classes where every assignment counts the same.
  • Teachers finding a class average on a test from a pasted column of scores.
  • Checking a semester average when your quarters are weighted equally.

If your categories have different weights, use the weighted grade calculator. To combine quarters with a final exam, use the semester grade calculator.

Mean, median and why one low score hurts

The average (mean) pulls toward outliers. Four 95s and one 45 average to 85, a full letter grade below most of the work. That's why some teachers drop the lowest quiz. To see the effect, delete your lowest score from the box and compare.

Frequently asked questions

How do I average my grades?

Add up all of your grades and divide by how many there are. 92, 85 and 78 add up to 255, and 255 ÷ 3 = 85%.

Should I average my grades or use a weighted grade?

Average them only if every grade counts the same. If your syllabus gives categories different weights (tests 50%, homework 20%), a simple average will be wrong. Use the weighted grade calculator instead.

How do I average letter grades?

Convert each letter to a number first. For a percentage average, use a typical percentage for each letter (B+ ≈ 88%). For a GPA-style average, use grade points (B+ = 3.3) and average those. The GPA calculator does that and also weights by credits.

How do I calculate a class average as a teacher?

Paste the column of scores from your gradebook or spreadsheet into the box. You'll get the class mean along with the highest and lowest scores.

Does averaging points work the same as averaging percentages?

Not always. Averaging 9/10 and 40/50 as percentages gives (90 + 80) ÷ 2 = 85%, but adding the points gives 49/60 = 81.7%. If your teacher grades on total points, use the points mode of the grade calculator.

Last reviewed by the GradeCalc team. See how we calculate.